CN109441865A - A kind of thermal-shutdown circuit and server system of fan board - Google Patents
A kind of thermal-shutdown circuit and server system of fan board Download PDFInfo
- Publication number
- CN109441865A CN109441865A CN201811214895.3A CN201811214895A CN109441865A CN 109441865 A CN109441865 A CN 109441865A CN 201811214895 A CN201811214895 A CN 201811214895A CN 109441865 A CN109441865 A CN 109441865A
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- Prior art keywords
- fan board
- temperature
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- power
- thermal
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/006—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by influencing fluid temperatures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a kind of thermal-shutdown circuit of fan board and server systems; temperature sensing circuit and power-supplying circuit including the temperature at the supply input port for detecting fan board; power-supplying circuit is used for when temperature is not less than preset temperature threshold, utilizes the power input of fan board input hot plug chip cutting fan board.The application is in view of the other positions at the supply input port of fan board compared to fan board; it is that temperature rises most fast, the maximum position of accumulation of heat; so the application detects the temperature at the supply input port of fan board; if the temperature is less than preset temperature threshold; think that fan board is in a safe condition, does not then do protection act；If the temperature is not less than preset temperature threshold, think that fan board is in over-temperature condition, then using the power input of fan board input hot plug chip cutting fan board, guarantees that fan board does not have the energy source of heat history, to avoid fan board from burning, the security reliability of server system is improved.
Description
Technical field
The present invention relates to server fields, more particularly to the thermal-shutdown circuit and server system of a kind of fan board.
Background technique
With the development of the network services such as internet, server is used widely in numerous areas.In rack cabinet
In server system, fan board is its important component, provides heat dissipation for cabinet, to guarantee its normal work.With user
Higher and higher to the cooling requirements of fan board, the load of fan board is increasing, and the security reliability of fan board is even more important.It is existing
Have in technology, in rack rack server system, fan board takes electricity, then respectively each fan to supply from the copper bar of whole machine cabinet
Electricity.Under normal conditions, there is a server node more than 30 in a cabinet, so the power of the DC power supply for cabinet power supply
Summation usually just has a large amount of energy impact fan board, goes out fan board in 6000W or more when short circuit occurs in fan board
Now continue raised heat history, fan board will be caused to burn to a certain degree when heat reaches, server system where causing
Safety and reliability reduce.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art needs to solve at present
The problem of.
Summary of the invention
The object of the present invention is to provide a kind of thermal-shutdown circuit of fan board and server systems, are in fan board
Using the power input of fan board input hot plug chip cutting fan board when temperature state, guarantee that fan board does not have the energy of heat history
Amount source so that fan board be avoided to burn, and then improves the safety and reliability of place server system.
In order to solve the above technical problems, the present invention provides a kind of thermal-shutdown circuits of fan board, including for detecting
The temperature sensing circuit and power-supplying circuit of temperature at the supply input port of fan board, in which:
The output end of the temperature sensing circuit is connect with the receiving end of the power-supplying circuit, the power supply control electricity
The control terminal on road is connect with the enable end of the fan board input hot plug chip on the fan board；
The power-supplying circuit is used to input when the temperature is not less than preset temperature threshold using the fan board
Hot plug chip cuts off the power input of the fan board.
Preferably, the temperature sensing circuit includes DC power supply, resistance and the energization input set on the fan board
Thermistor in the corresponding preset temperature detection zone of mouth, in which:
The output end of the DC power supply is connect with the first end of the thermistor, the second end of the thermistor with
The first end of the resistance connects, output end of the common end as the temperature sensing circuit, the second termination of the resistance
Ground.
Preferably, the thermistor is specially negative tempperature coefficient thermistor.
Preferably, the resistance is specially Chip-R.
Preferably, the power-supplying circuit is specially switching tube, and the control terminal of the switching tube is as described for automatically controlled
The receiving end of circuit processed, control terminal of the first end of the switching tube as the power-supplying circuit, the of the switching tube
Two ends ground connection；
The switching tube is used to itself disconnect when the temperature is less than preset temperature threshold；When the temperature is not less than pre-
If itself is connected when temperature threshold, the level of the enable end of the fan board input hot plug chip is dragged down, to cut off the wind
Fan the power input of plate.
Preferably, the switching tube is specially NMOS tube, control terminal of the grid of the NMOS tube as the switching tube,
First end of the drain electrode as the switching tube of the NMOS tube, the source electrode of the NMOS tube as the switching tube second
End.
Preferably, the preset temperature threshold is specially 60 DEG C.
In order to solve the above technical problems, the present invention also provides a kind of server system, including N number of fan board, further include
With the thermal-shutdown circuit of the one-to-one N number of any of the above-described kind of fan board of N number of fan board, wherein N is positive integer.
The present invention provides a kind of thermal-shutdown circuits of fan board, including the supply input port for detecting fan board
The temperature sensing circuit and power-supplying circuit of the temperature at place, in which: the output end and power-supplying circuit of temperature sensing circuit
Receiving end connection, the enable end of the fan board input hot plug chip in the control terminal and fan board of power-supplying circuit connects
It connects；Power-supplying circuit is used for when temperature is not less than preset temperature threshold, cuts off wind using fan board input hot plug chip
Fan the power input of plate.
The application is that temperature rises most in view of the other positions at the supply input port of fan board compared to fan board
Fastly, the maximum position of accumulation of heat (i.e. easily attractive fan board burn position), so the thermal-shutdown circuit of the application is examined
The temperature at the supply input port of fan board is surveyed, if the temperature is less than preset temperature threshold, it is believed that fan board is in safe shape
State does not do protection act then；If the temperature is not less than preset temperature threshold, it is believed that fan board is in over-temperature condition, then utilizes wind
The power input for fanning plate input hot plug chip (power input of controlling fan plate) cutting fan board, guarantees that fan board does not have
The energy source of heat history so that fan board be avoided to burn, and then improves the safety and reliability of place server system.
The present invention also provides a kind of server systems, with above-mentioned thermal-shutdown circuit beneficial effect having the same.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the thermal-shutdown circuit of fan board provided by the invention；
Fig. 2 is a kind of connection schematic diagram of copper bar and fan board provided by the invention；
Fig. 3 is the structural schematic diagram of the thermal-shutdown circuit of another fan board provided by the invention；
Fig. 4 is a kind of graph of relation of thermistor and temperature provided by the invention.
Specific embodiment
Core of the invention is to provide the thermal-shutdown circuit and server system of a kind of fan board, is in fan board
Using the power input of fan board input hot plug chip cutting fan board when temperature state, guarantee that fan board does not have the energy of heat history
Amount source so that fan board be avoided to burn, and then improves the safety and reliability of place server system.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is please referred to, Fig. 1 is a kind of structural schematic diagram of the thermal-shutdown circuit of fan board provided by the invention.
The thermal-shutdown circuit of the fan board includes: the temperature for detecting the temperature at the supply input port of fan board
Detection circuit 01 and power-supplying circuit 02, in which:
The output end of temperature sensing circuit 01 is connect with the receiving end of power-supplying circuit 02, the control of power-supplying circuit 02
End processed is connect with the enable end of the fan board input hot plug chip on fan board；
Power-supplying circuit 02 is used to input hot plug chip using fan board when temperature is not less than preset temperature threshold
Cut off the power input of fan board.
It should be noted that the default of the application sets in advance, it is only necessary to which setting is primary, unless according to practical feelings
Condition needs to modify, and does not otherwise need to reset.
Specifically, referring to figure 2., Fig. 2 is a kind of connection schematic diagram of copper bar and fan board provided by the invention.Rack machine
Cabinet server system includes that (fan board 1- fan board n) is all connected with m fan (fan 1- wind on each fan board to n fan board
Fan is m), wherein n, m are positive integer.It should be noted that the thermal-shutdown circuit of fan board provided by the present application is to be directed to
The overheat protector of any fan board in rack rack server system, that is to say, that every in rack rack server system
It is both needed to that thermal-shutdown circuit provided by the present application is arranged on a fan board.
It finds by experience, what fan board often occurred burns abnormal conditions are as follows: short-circuit (that is: electronics occurs for fan board rear end
The abnormal part shorted to earths for causing rear end to be powered by 12V such as component exception or board are impaired), cause fan board to burn.Base
In this, the application carries out simulated experiment to fan board: the part that fan board rear end power by 12V is artificially short-circuit, while with hot
As instrument monitors the heat condition of entire fan board.It is found during simulated experiment: (Fig. 2 at the supply input port of fan board
Middle connect) temperature rise it is most fast (when short circuit occurs in fan board, short circuit current necessarily passes connect and flows into fan board,
Due to there is high current to flow through, the temperature at connect understands steep temperature rise), hence it is evident that it is higher than board other positions, and heat history is bright
Aobvious, fan board is burnt later, and phenomenon of the failure is reappeared.
Based on experience and simulated experiment as a result, the application considers at the supply input port of fan board compared to fan board
Other positions, be that temperature rises most fast, the maximum position of accumulation of heat (i.e. easily attractive fan board burn position), so
The application increases thermal-shutdown circuit at the supply input port of fan board, and avoiding fan board rear end extremely leads to 12V over the ground
Short circuit causes fan board to catch fire.
Specifically, the thermal-shutdown circuit of the application includes temperature sensing circuit 01 and power-supplying circuit 02, work
Principle are as follows: detect the temperature of the supply input port of fan board by temperature sensing circuit 01 first, and transmit it to power supply
Control circuit 02.Power-supplying circuit 02 makees the temperature at the supply input port of fan board with the temperature threshold being arranged in advance
Compare, if the temperature is less than preset temperature threshold, it is believed that fan board is in a safe condition, then does not do protection act；If the temperature
Not less than preset temperature threshold, it is believed that fan board is in over-temperature condition, then using fan board input hot plug chip, (fan board is defeated
Enter hot plug chip can on or off fan board 12V power input) cutting fan board power input, guarantee that fan board does not have
There is the energy source of heat history, so that fan board be avoided to burn.
The present invention provides a kind of thermal-shutdown circuits of fan board, including the supply input port for detecting fan board
The temperature sensing circuit and power-supplying circuit of the temperature at place, in which: the output end and power-supplying circuit of temperature sensing circuit
Receiving end connection, the enable end of the fan board input hot plug chip in the control terminal and fan board of power-supplying circuit connects
It connects；Power-supplying circuit is used for when temperature is not less than preset temperature threshold, cuts off wind using fan board input hot plug chip
Fan the power input of plate.
The application is that temperature rises most in view of the other positions at the supply input port of fan board compared to fan board
Fastly, the maximum position of accumulation of heat, so the temperature at the supply input port of the thermal-shutdown circuit detection fan board of the application
Degree, if the temperature is less than preset temperature threshold, it is believed that fan board is in a safe condition, then does not do protection act；If the temperature is not
Less than preset temperature threshold, it is believed that fan board is in over-temperature condition, then cuts off fan board using fan board input hot plug chip
Power input, guarantee that fan board does not have the energy source of heat history, so that fan board be avoided to burn, and then service where improving
The safety and reliability of device system.
Referring to figure 3., Fig. 3 is the structural schematic diagram of the thermal-shutdown circuit of another fan board provided by the invention.
The thermal-shutdown circuit of the fan board is on the basis of the above embodiments:
As a kind of preferred embodiment, temperature sensing circuit 01 is including DC power supply, resistance R2 and set on fan board
Thermistor R1 in the corresponding preset temperature detection zone in supply input port, in which:
The output end of DC power supply is connect with the first end of thermistor R1, and the second end of thermistor R1 is with resistance R2's
First end connection, output end of the common end as temperature sensing circuit 01, the second end ground connection of resistance R2.
Specifically, the temperature sensing circuit 01 of the application includes DC power supply (output voltage VCC), resistance R2 and temperature-sensitive electricity
It hinders R1 (thermistor R1 sensitivity is higher, and operating temperature range is wider, small in size, and stability is good, and overload capacity is strong), work
Principle an are as follows: temperature sensing area is arranged in the application in advance, and thermistor R1 can be preferably in the temperature sensing area
(set-up mode can be with are as follows: draws radius centered at connect and is less than for the temperature change for sensing at the connect of fan board
Thermistor R1 is set to the position in circle and at connect, the temperature that thermistor R1 is detected by the circle of pre-set radius
The temperature being considered at connect).Based on this, when the temperature at the connect of fan board changes, thermistor R1
The voltage at both ends changes therewith, then resistance R2 (conventional, electric-resistance) also changes to the partial pressure value of the output voltage of DC power supply.
The voltage change at the both ends resistance R2 is represented the temperature change at the connect of fan board by the application, works as connect to realize
The temperature at place cuts off the power input of fan board when being not less than established temperature threshold value.
As a kind of preferred embodiment, thermistor R1 is specially negative tempperature coefficient thermistor.
Specifically, the thermistor R1 of the application can select negative tempperature coefficient thermistor (temperature is higher, and resistance value is got over
It is small；Temperature is lower, and resistance value is bigger).As for the specific selection of thermistor R1, the application is not particularly limited herein, according to
Depending on actual conditions.
As a kind of preferred embodiment, resistance R2 is specially Chip-R.
Specifically, the resistance R2 (fixed resistance value) of the application can select Chip-R, humidity and high temperature, temperature coefficient
It is small, circuit space cost is saved, refines design more.As for the specific selection of resistance R2, the application is not done particularly herein
It limits.
As a kind of preferred embodiment, power-supplying circuit 02 is specially switching tube Q, the control terminal conduct of switching tube Q
The receiving end of power-supplying circuit 02, control terminal of the first end of switching tube Q as power-supplying circuit 02, the of switching tube Q
Two ends ground connection；
Switching tube Q is used to itself disconnect when temperature is less than preset temperature threshold；When temperature is not less than preset temperature threshold
Shi Zishen conducting drags down the level of the enable end of fan board input hot plug chip, to cut off the power input of fan board.
Specifically, the enabled end signal EN of fan board input hot plug chip is the control for controlling the power input of fan board
Signal, it may be assumed that when EN signal is high level, hot plug line conduction, the 12V connected on connect can be input to fan board；When
When EN signal is low level, hot plug route is closed, and is inputted on fan board without any voltage and current.Based on this, the electricity of the application
Source control circuit 2 can select switching tube Q, the enable end of the first end wind-receiving fan plate input hot plug chip of switching tube Q, switch
The second end of pipe Q is grounded.When switching tube Q is disconnected, EN signal is high level, and fan board normally inputs 12V；When switching tube Q is led
When logical, it is equivalent to the enable end ground connection of fan board input hot plug chip, i.e. fan board inputs the enable end of hot plug chip
Level is pulled low (EN signal is low level), to cut off the 12V power input of fan board.
When the input voltage of the control terminal of known switching tube Q is less than conducting voltage, switching tube Q is disconnected；The control of switching tube Q
When the input voltage at end is not less than conducting voltage, switching tube Q conducting.To realize that the temperature when metal-oxide-semiconductor is not less than established temperature threshold
The 12V power input of fan board is cut off when value, the application should ensure that when the temperature of metal-oxide-semiconductor is not less than established temperature threshold value, temperature
Spend the output voltage control switching tube Q conducting of detection circuit 01.
As a kind of preferred embodiment, switching tube Q is specially NMOS tube, control of the grid of NMOS tube as switching tube Q
End processed, first end of the drain electrode of NMOS tube as switching tube Q, second end of the source electrode of NMOS tube as switching tube Q.
Further, the switching tube Q of the application can select but be not limited only to NMOS tube, and the application is not done particularly herein
It limits.
As a kind of preferred embodiment, preset temperature threshold is specially 60 DEG C.
Specifically, in normal operating conditions, connect temperature is not much different fan board with environment temperature, and highest will not
More than 40 DEG C.Temperature threshold can be 60 DEG C by the application, it may be assumed that when the temperature at connect is lower than 60 DEG C, thermal-shutdown circuit
Protection act will not be made；When temperature at connect is higher than 60 DEG C, thermal-shutdown circuit meeting trigger protection cuts off fan
The power input of plate.
Under the present embodiment, referring to figure 4., Fig. 4 is a kind of relation curve of thermistor and temperature provided by the invention
Figure.If thermistor R1 selects the negative tempperature coefficient thermistor with resistance value temperature relation as shown in Figure 4；Resistance R2 is resistance value
The Chip-R of 620ohm；The output voltage of DC power supply is 5V；Then thermistor R1 and resistance R2 is divided by 5V and is controlled
NMOS tube gate voltage values (conducting voltage of this NMOS tube be 1.7V, it may be assumed that when grid voltage be greater than or equal to 1.7V when,
NMOS transistor conduction, EN signal become low level, and hot plug route is closed, and fan board is inputted without any voltage and current；When grid electricity
When pressure is less than 1.7V, NMOS tube is closed, the unprotected line influence of EN signal, fan board normal power supply).
4 curve graph of comparative diagram can be seen that when the temperature of thermistor R1 sensing reaches 60 DEG C, and thermistor R1 is corresponding
Resistance value be about 1.2Kohm, then the grid voltage of NMOS tube: 5V*620ohm/ (1.2Kohm+620ohm)=1.7V.Work as fan
When temperature at plate connect is lower than 60 DEG C, thermistor R1 resistance value is greater than 1.2Kohm, and the grid signal for controlling NMOS tube is low
In 1.7V, NMOS tube is remained off, and EN signal is not influenced by thermal-shutdown circuit；Temperature at fan board connect
When degree is more than or equal to 60 DEG C, the resistance value of thermistor R1 is less than or equal to 1.2Kohm, and the grid signal for controlling NMOS tube is higher than
1.7V, NMOS transistor conduction, EN signal become low level, and fan board is inputted without any voltage and current, thus protected from source
Entire fan board is not burnt.
In addition, the technical solution of the application is also used in rack server fan plate production test test stage, for wind
The inspection for the problems such as short circuit occurred in fan plate production process is abnormal.
It further include being corresponded with N number of fan board the present invention also provides a kind of server system, including N number of fan board
N number of any of the above-described kind of fan board thermal-shutdown circuit, wherein N is positive integer.
The introduction of server system provided by the present application please refers to the embodiment of above-mentioned thermal-shutdown circuit, and the application is herein
It repeats no more.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. a kind of thermal-shutdown circuit of fan board, which is characterized in that at the supply input port for detecting fan board
Temperature temperature sensing circuit and power-supplying circuit, in which:
The output end of the temperature sensing circuit is connect with the receiving end of the power-supplying circuit, the power-supplying circuit
Control terminal is connect with the enable end of the fan board input hot plug chip on the fan board；
The power-supplying circuit is used to input heat when the temperature is not less than preset temperature threshold using the fan board and insert
Depoling piece cuts off the power input of the fan board.
2. the thermal-shutdown circuit of fan board as described in claim 1, which is characterized in that the temperature sensing circuit includes straight
Galvanic electricity source, resistance and the thermistor in the corresponding preset temperature detection zone in the supply input port of the fan board,
Wherein:
The output end of the DC power supply is connect with the first end of the thermistor, the second end of the thermistor with it is described
The first end of resistance connects, output end of the common end as the temperature sensing circuit, the second end ground connection of the resistance.
3. the thermal-shutdown circuit of fan board as claimed in claim 2, which is characterized in that the thermistor is specially subzero temperature
Spend coefficient resistance.
4. the thermal-shutdown circuit of fan board as claimed in claim 3, which is characterized in that the resistance is specially patch electricity
Resistance.
5. the thermal-shutdown circuit of fan board as claimed in claim 3, which is characterized in that the power-supplying circuit is specially
Switching tube, receiving end of the control terminal of the switching tube as the power-supplying circuit, the first end conduct of the switching tube
The control terminal of the power-supplying circuit, the second end ground connection of the switching tube；
The switching tube is used to itself disconnect when the temperature is less than preset temperature threshold；When the temperature is not less than default temperature
Itself is connected when spending threshold value, the level of the enable end of the fan board input hot plug chip is dragged down, to cut off the fan board
Power input.
6. the thermal-shutdown circuit of fan board as claimed in claim 5, which is characterized in that the switching tube is specially NMOS
Pipe, control terminal of the grid of the NMOS tube as the switching tube, the drain electrode of the NMOS tube as the switching tube the
One end, second end of the source electrode of the NMOS tube as the switching tube.
7. the thermal-shutdown circuit of fan board as claimed in claim 6, which is characterized in that the preset temperature threshold is specially
60℃。
8. a kind of server system, which is characterized in that further include one-to-one with N number of fan board including N number of fan board
The thermal-shutdown circuit of N number of such as described in any item fan boards of claim 1-7, wherein N is positive integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811214895.3A CN109441865A (en) | 2018-10-18 | 2018-10-18 | A kind of thermal-shutdown circuit and server system of fan board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811214895.3A CN109441865A (en) | 2018-10-18 | 2018-10-18 | A kind of thermal-shutdown circuit and server system of fan board |
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| Publication Number | Publication Date |
|---|---|
| CN109441865A true CN109441865A (en) | 2019-03-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811214895.3A Pending CN109441865A (en) | 2018-10-18 | 2018-10-18 | A kind of thermal-shutdown circuit and server system of fan board |
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| CN111736687A (en) * | 2020-06-24 | 2020-10-02 | 苏州浪潮智能科技有限公司 | Server mainboard and temperature protection circuit thereof |
| CN113204466A (en) * | 2021-04-29 | 2021-08-03 | 山东英信计算机技术有限公司 | Over-temperature protection method and electronic equipment |
| CN113204466B (en) * | 2021-04-29 | 2022-11-18 | 山东英信计算机技术有限公司 | Over-temperature protection method and electronic equipment |
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Application publication date: 20190308 |